70 Extrados
: HOW THE DIFFERENT STRUCTURAL PARTS ARE DESIGNATEDThe exterior curve of an arch, especially the upper curved face A. B is the Intrados or Soffit.
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116 Spandrel
The irregular, triangular space, A, between the curve of an arch and the enclosing right angle. ... 117 Strut
In general, any piece of a frame, such as a timber A, or a brace B, which resists pressure or thrust in the direction of its length. <div> <img src="/images/fig118_123.jpg" alt="Fig. 118.-Fig. 123." title="" height="319" width="108"> </div> ... 118 Stud Studding
The vertical timber or scantling, A, which is one of the small uprights of a building to which the boarding or plastering lath are nailed. ... 120 Trammel
A very useful tool for drawing ellipses. It comprises a cross, A, with grooves and a bar, B, with pins, C, attached to sliding blocks in the grooves, and a pen or stylus, D, at the projecting end of the bar to scribe the ellipse. ... 121 Turret
A little tower, frequently only an ornamental structure at one of the angles of a larger structure. ... 122 Transom
A horizontal cross-bar, A, above a door or window or between a door and a window above it. Transom is the horizontal member, and if there is a vertical, like the dotted line B, it is called a Mullion. See Stile. ... 123 Valley Roof
A place of meeting of two slopes of a roof which have their sides running in different directions and formed on the plan of a re-entrant angle. <hr> ... 154 apsides Or apsis
One of two points, A, A, of an orbit, oval or ellipse farthest from the axis, or the two small dots. 155. <em>Chord.</em>—A right line, as A, uniting the extremities of the arc of a circle or a curve. ... 156 convolute (see Also involute)
Usually employed to designate a wave or folds in opposite directions. A double involute. 157. <em>Conic Section.</em>—Having the form of or resembling a cone. Formed by cutting off a cone at any angle. See line A. 158. <em>Conoid.</em>&mda... 66 Dormer
A window pierced in a roof and so set as to be vertical, while the roof slopes away from it. Also called a Gablet. ... 67 Dowel
A pin or stud in one block, or body, designed to engage with holes in another body to hold them together in alignment. ... 68 Drip
That part of a cornice or sill course A, or other horizontal member which projects beyond the rest, so as to divert water. ... 70 Extrados
The exterior curve of an arch, especially the upper curved face A. B is the Intrados or Soffit. ... 71 Engrailed
Indented with small concave curves, as the edge of a bordure, bend, or the like. ... 72 Facet
The narrow plain surface, as A, between the fluting of a column. ... 73 Fret Fretwork
Ornamental work consisting of small fillets, or slats, intersecting each other or bent at right angles. Openwork in relief, when elaborated and minute in all its parts. Hence any minute play of light and shade. A, Japanese fretwork. B, Green fret. ... 74 Frontal Also Called Pediment
The triangular space, A, above a door or window. ... 75 Frustums
That part of a solid next the base, formed by cutting off the top; or the part of any solid, as of a cone, pyramid, etc., between two planes, which may either be parallel or inclined to each other. ... 76 Fylfat
A rebated cross used as a secret emblem and worn as an ornament. It is also called Gammadium, and more commonly known as Swastika. ... 77 Gambrel Roof
A curb roof having the same section in all its parts, with a lower, steeper and longer part. See Curb Roof and distinguish difference. ... 78 Gargoyle
A spout projecting from the roof gutter of a building, often carved grotesquely. ... 79 Gudgeon
A wooden shaft, A, with a socket, B, into which is fitted a casting, C. The casting has a gudgeon, D. <div> <img src="/images/fig80_93.jpg" alt="Fig. 80.-Fig. 93." height="640" width="112"> </div> ... 80 Guilloche
An ornament in the form of two or more bands or strings twisted together or over or through each other. ... 81 Half Timbered
Constructed of a timber frame, having the spaces filled in with masonry. ...